The JY-DTU-G DTU user manual provides product features, specifications, dimensions, indicator meanings, network architecture, and configuration instructions.
This manual introduces the JY-DTU-G general‑purpose DTU, covering its wide voltage supply range (7 V‑30 V), built‑in RS232, RS485 and GPRS ports, and data transmission capabilities such as TCP/UDP, SMS and GPRS auto‑reconnect. It also lists the recommended power supply (DC 12 V/1 A) and key technical parameters.
The document includes mechanical drawings, a description of the green and red indicator lights, three network connection schemes (fixed IP, fixed domain, third‑party cloud), step‑by‑step configuration procedures, SMS command formats, and contact information for technical support and software downloads. This manual is written in Chinese.
| Weight | 80 g |
|---|---|
| Recommended Power Supply | DC 12 V/1 A |
| Supply Voltage Range | DC 7 V‑DC 30 V |
| GPRS Peak Power | 2 W |
| Static Power Consumption | 0.16 W (12 V 14 mA) |
| RS232 Baud Rate | 2400‑38400 bps (default 9600 bps) |
| RS485 Baud Rate | 2400‑38400 bps (default 9600 bps) |
| GPRS Class | CLASS 10 |
| Maximum Downlink Speed | 85.6 kbps |
| Maximum Uplink Speed | 42.8 kbps |
| Operating Temperature Range | -30 ℃ to +85 ℃ |
| Relative Humidity | 95 % (non‑condensing) |
Use the “生成短信” function in the basic configuration page to generate SMS commands such as *JY#01#..., then send the SMS to the device’s phone number.
A DC 12 V/1 A supply is recommended, with an acceptable voltage range of DC 7 V to DC 30 V.
The DTU includes one RS232 port, one RS485 port, and a GPRS module for cellular communication.